Man denies murdering Sydney pig farmer

A woman has cried while telling a jury of seeing her husband with a hurt and bloodied head as he lay convulsing beside her after she was woken by masked intruders in their bedroom.

Brett Delamont was left with brain damage after allegedly being beaten with a pick axe by Ryan David Evans who is also charged with the murder of another man and attempted murder of his partner.

"He was hurt; he was unaware of what was happening," Mr Delamont's wife Alana Bush told the NSW Supreme Court on Monday.

Evans, 28, has pleaded not guilty to seven charges relating to a home invasion and attack on Mr Delamont in April, 2014 and of murdering pig farmer Keith Cini and attempting to murder his partner Lucina Boldi in a second home invasion a month later.

In the Crown's opening address, prosecutor Chris Maxwell said Ms Boldi was woken by Mr Cini calling "Luce, Luce" loudly before she was hit in the head with something.

She yelled out "no more, please stop" and then lay still and pretended she was dead as their Badgery's Creek house was ransacked.

Evans allegedly once worked for Mr Cini.

Ms Bush said she and her husband were sleeping in one bedroom while their daughter and her boyfriend were in another in their home in Medway in the NSW Southern Highlands.

She wept as she told the jury how she screamed after being woken up by two men at the foot of her bed, one of whom was holding a bright light.

One man then yelled: "Shut up, shut up, or I'll hit him again."

The man lunged across the bed and hit where her husband was lying, using what looked like a piece of timber longer than a hockey stick.

"I tried very hard not to look as I knew there was something wrong with him," she said.

"He was convulsing, there was blood and I could see his head was damaged and obviously hit."

One intruder taped her husband's hands, while the other taped hers.

One man asked where the cash was and when she replied she didn't know, he asked a second time, threatening to hit her husband again.

She told him and he retrieved $4000 cash from a chest of drawers, before saying "There must be more."

When he threatened her again, she told him about another $4000 and also told him the whereabouts of a rifle after he demanded the weapon.

"He asked me who else was in the house and I took a long time to answer because I didn't want to give my daughter up," she said.

Mr Maxwell said the jurors would hear evidence implicating Evans from one man involved in the first home invasion and from a second man involved in both crimes.

The trial continues.